Livestock Feed Calculator
Calculate feed requirements and costs for livestock with nutritional analysis and optimization
Feed Formulation & Requirements
Dairy Cow (Lactating)
Cattle - 600kg - Lactating 25L/dayEnter the total number of animals to feed
Feed Formulation:
Feed Requirements & Costs
$265.75/day
Total Daily Feed Cost
Monthly Cost:
$7972.47
Annual Cost:
$96998.43
Cost per Head:
$5.31/day
Feed Breakdown:
Alfalfa Hay (40%)
470.6 kg/day • $70.59/day
Corn/Maize (30%)
340.9 kg/day • $85.23/day
Soybean Meal (15%)
168.5 kg/day • $75.84/day
Wheat Bran (15%)
170.5 kg/day • $34.09/day
Nutritional Analysis:
Energy Adequacy:
Protein Adequacy:
Recommendations:
Reduce energy feeds to prevent metabolic issues
Reduce protein feeds to optimize cost efficiency
Livestock Feed Calculator: Daily Feed Requirements, Rations & Cost Analysis
Our Livestock Feed Calculator determines daily dry matter intake, as-fed feed quantities, and total feed costs for beef cattle, dairy cows, swine, poultry, sheep, and goats. Enter your herd or flock size, body weight, and production stage to get precise feeding recommendations and a 30-day cost budget.
Daily Feed Requirements by Animal Type
| Animal | Body Weight | Dry Matter (%BW) | As-Fed Feed/Day | Stage |
|---|---|---|---|---|
| Beef Cow (dry) | 1,100 lb | 2.0% | ~25 lb | Maintenance |
| Beef Cow (nursing) | 1,100 lb | 2.8% | ~35 lb | Peak lactation |
| Dairy Cow (high) | 1,400 lb | 3.5% | ~55 lb | 80 lb milk/day |
| Finishing Steer | 900 lb | 2.8% | ~28 lb | High-grain feedlot |
| Gestating Sow | 300 lb | ~1.5% | 4–5 lb | Limit-fed in gestation |
| Market Pig (50 lb) | 50 lb | 5.0% | ~3 lb | Ad libitum, FCR ≈3.0 |
| Broilers (6 weeks) | 5.5 lb | 5.0% | ~0.3 lb | FCR ≈1.8 |
| Laying Hens | 4.4 lb | 5.5% | ~0.27 lb | Peak lay, 90% production |
| Ewes (late gestation) | 150 lb | 2.5% | ~4 lb | Last 6 weeks pre-lambing |
| Dairy Goat | 130 lb | 3.5% | ~5 lb | 1 gal milk/day |
How to Use the Livestock Feed Calculator
- Select animal type — choose the species and production class (beef cow-calf, dairy, feedlot finishing, swine grow-finish, layer, broiler, etc.).
- Enter average body weight — use current average weight for the group. For stocker cattle, enter beginning weight; the calculator can project growth and feed needs over a feeding period.
- Set herd or flock size — enter the total number of animals to scale up from per-head requirements to total daily feed amounts.
- Choose feeds and enter prices — select your feed ingredients (hay, corn, soybean meal, distillers grains, commercial pellet, etc.) and enter your current cost per ton or per bag.
- Review results — the calculator shows daily dry matter needed, total as-fed amount, estimated protein and energy balance, and projected 30-day feed cost for the group.
Example Calculations
Example 1 — 50-Cow Beef Herd, 100-Day Winter Feeding
- Dry cows, avg 1,100 lb → 25 lb hay/day each (assuming hay at 88% DM)
- Total: 50 × 25 = 1,250 lb hay/day = 125,000 lb over 100 days = 62.5 tons
- At $150/ton: $9,375 total winter feed cost
Example 2 — 1,000 Laying Hens, Daily Feed & Annual Cost
- 1,000 hens × 0.27 lb/day = 270 lb feed/day
- Annual: 270 × 365 = 98,550 lb = ~49 tons
- At $400/ton: $19,710/year feed cost
- Revenue: 1,000 hens × 90% lay × 365 days = ~328,500 eggs ÷ 12 × $4.50/dozen = $123,188
Frequently Asked Questions
What is the difference between dry matter and as-fed feed?
Dry matter (DM) is the weight of feed after all moisture is removed. As-fed weight includes the natural moisture in the feed. Hay is typically 88–90% DM (10–12% moisture), while pasture grass may be only 15–25% DM (75–85% moisture). Animals eat to meet their dry matter needs, not their as-fed needs. To convert: as-fed amount = DM needed ÷ DM%. For example, to provide 20 lb DM from 88% DM hay: 20 ÷ 0.88 = 22.7 lb as-fed hay. Always compare feeds on a dry matter basis to avoid being misled by moisture differences.
What is feed conversion ratio (FCR)?
Feed conversion ratio (FCR) is the pounds of feed consumed per pound of live weight gain (or per dozen eggs, per gallon of milk, etc.). Lower FCR = more efficient. Typical FCRs: broilers 1.7–1.9 lbs feed/lb gain (excellent efficiency), swine grow-finish 2.5–3.0, beef feedlot 5.5–7.0, laying hens ~2 lbs feed/dozen eggs. FCR is driven by genetics, feed quality, health status, and environmental conditions (temperature especially). Improving FCR by 0.1 points on a 1,000-head feedlot translates to significant cost savings.
How much hay does a cow eat per day?
A mature beef cow (1,000–1,200 lb) eats approximately 24–30 lb of hay per day at maintenance (about 2–2.5% of body weight as dry matter). Nursing cows in peak lactation need 30–40 lb/day. Quality matters: poor-quality hay (40–45% TDN) may need supplemental grain to meet energy needs, while excellent alfalfa (65%+ TDN) can meet all nutrient needs alone. A 1,200-lb round bale typically lasts a 15-cow herd about 3–4 days with moderate waste.
How do I balance a livestock ration?
Balancing a ration means matching nutrient supply to animal requirements. The key nutrients to balance are: energy (TDN or NEm/NEg in Mcal/lb), crude protein (%), calcium, and phosphorus. The process involves: 1) determining animal requirements (use a table or NRC standards), 2) analyzing feed ingredients (lab test or use book values), 3) mixing ingredients in proportions that meet requirements within budget using Pearson Square or linear programming. Our calculator uses NRC (2016) beef cattle requirements as the default database.
What is total mixed ration (TMR)?
Total Mixed Ration (TMR) is a feeding method where all feed ingredients (forages, grains, protein supplements, minerals, vitamins) are blended into a single uniform mixture that cows eat throughout the day. Compared to separate feeding, TMR reduces sorting, ensures every mouthful has the same nutrient profile, supports more consistent rumen pH (reducing acidosis risk), and is practical at large-scale dairy operations. TMR is now the standard feeding method for commercial dairy herds of 200+ cows. It requires a mixer wagon and total feed inventory management.
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